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Thread: Math bros gtfih

post 1663380053 06-24-2022, 11:33 AM
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Math bros gtfih

In a large population, 60% of the people have been vaccinated. If 4 people are randomly selected, what is the probability that at least one of them has been vaccinated?


What is the formula to answer this question?

Also I checked, it’s not 350



Reps
There is no they…
post 1663380493 06-24-2022, 11:42 AM
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Originally Posted By Travis99⏩
In a large population, 60% of the people have been vaccinated. If 4 people are randomly selected, what is the probability that at least one of them has been vaccinated?


What is the formula to answer this question?

Also I checked, it’s not 350



Reps
1-40%^4
post 1663380593 06-24-2022, 11:44 AM
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If they are liberals chance is all of them are vaccinated
post 1663380733 06-24-2022, 11:46 AM
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I believe it's a 97.44% chance.

.4^4
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post 1663380803 06-24-2022, 11:47 AM
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forget how to do this

I know a large sample is n>=30

assuming 30 is your population, 18 people are gonna be vaccinated, 12 are not going to be

probably an equation for it
Balanced Test Crew
post 1663380943 06-24-2022, 11:49 AM
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In b4 MiscMathematician.
post 1663381113 06-24-2022, 11:51 AM
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  1. Travis99
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Originally Posted By Jayarbie⏩
1-40%^4
Nice.

Now I’m working on conditional probabilities. Which for some reason I can’t quite get.
There is no they…
post 1663381273 06-24-2022, 11:55 AM
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entering again. going back to STA 261 I remember a problem that asked something like, if you flip a coin, what are the odds of flipping heads 4 times in a row and the answer i believe was .5 x .5 x .5 x .5 or .0625, or .9325 of not flipping tails. conversely that would be the same answer i do believe of flipping heads 4x in a row.

this question asks what are the odds of at least one of them being vaxxed so im going to guess .4 (unvaxd) x .4 (unvaxd) x .4 (unvaxed) and omitting the fourth participant because they are vaxxed, so that = .064 - 1 = .936 or 93.6%

could be way the fuk wrong but thats my best and final answer. used to hnnnnnngh over stats srs.
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post 1663381473 06-24-2022, 11:59 AM
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Originally Posted By xbluexhawkx⏩
forget how to do this

I know a large sample is n>=30

assuming 30 is your population, 18 people are gonna be vaccinated, 12 are not going to be

probably an equation for it
There's that world famous California public education at work again eh brah?
post 1663381623 06-24-2022, 12:02 PM
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60%
post 1663384813 06-24-2022, 12:48 PM
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  1. Travis99
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1 math class for a psy degree. I’m dyslexic with numbers. Srs
There is no they…
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